Amination process

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 209/16 (2006.01) C07C 209/04 (2006.01) C07C 211/10 (2006.01)

Patent

CA 2306145

The present invention relates to an amination process for the manufacture of polyamines. The purpose of the process is to increase the selectivity of linear aminated products and to prevent the formation of discolouring by-products or by-products which may later cause discolouration. According to the process this is achieved by performing, in a first part of the process, the amination to a conversion degree of between 50 and 98 % by weight, calculated on the total yield of polyamines, at a proportionally time-weighted average temperature, which is at least 15 °C higher than the proportionally time-weighted average temperature in the remaining part.

Cette invention concerne un processus d'amination permettant de fabriquer des polyamines. Ce processus a pour but d'accroître la sélectivité de produits aminés linéaires, et d'empêcher la formation de produits dérivés décolorants ou de produits dérivés entraînant une décoloration ultérieure. A cette fin, ce processus comprend une première étape où l'on effectue une amination selon un taux de conversion allant de 50 à 98 % en poids tel que calculé par rapport à la production totale de polyamines. Cette amination se déroule à une température moyenne et pondérée proportionnellement dans le temps qui est supérieure d'au moins 15 DEG C à la température moyenne et pondérée proportionnellement dans le temps de la partie restante.

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